Character of Atomic Vibrations in a Lennard-Jones Glass

Details Character of Atomic Vibrations in a Lennard-Jones Glass Character of Atomic Vibrations in a Lennard-Jones Glass

2003-07-17

arxiv.org/abs/cond-mat/0307435v2

Physics

Condensed Matter

Materials Science

4 pages, 4 embedded figures

Scientific paper

Lennard-Jones glasses (made on a computer by quenching from liquid state coordinates) are studied in harmonic approximation. Vibrational eigenfrequencies and eigenvectors are found by exact diagonalization for models with periodic boundaries and N=(500, 2048, and 6980) atoms. We analyze the density of states, mobility edge, and bond-stretching character of the normal modes. In agreement with older work of Grest, Nagel, and Rahman, the upper 7% of modes are localized, and the rest, delocalized. We find that modes can not be differentiated by any property or quantum number except their eigenfrequency. More specifically, in a given narrow frequency interval, all modes are globally identical. Transverse or longitudinal character, for example, disappears.

Affiliated with

Also associated with

No associations

Rating

Character of Atomic Vibrations in a Lennard-Jones Glass does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Character of Atomic Vibrations in a Lennard-Jones Glass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Character of Atomic Vibrations in a Lennard-Jones Glass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-151802